X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/22239a37ce131e4f5341aee571f08aced283e16a..04838ceaee8e1344b7b5599b60f8b5fc6a1f385f:/perlvars.h diff --git a/perlvars.h b/perlvars.h index b5488ab..b4f3e51 100644 --- a/perlvars.h +++ b/perlvars.h @@ -1,159 +1,140 @@ -/* This file describes the "global" variables used by perl */ -/* This used to be in perl.h directly but we want to */ -/* abstract out which are per-thread per-interpreter really */ -/* global and how initialized into one file */ +/* perlvars.h + * + * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, + * by Larry Wall and others + * + * You may distribute under the terms of either the GNU General Public + * License or the Artistic License, as specified in the README file. + * + */ /****************/ /* Truly global */ /****************/ +/* Don't forget to re-run embed.pl to propagate changes! */ + +/* This file describes the "global" variables used by perl + * This used to be in perl.h directly but we want to abstract out into + * distinct files which are per-thread, per-interpreter or really global, + * and how they're initialized. + * + * The 'G' prefix is only needed for vars that need appropriate #defines + * generated in embed*.h. Such symbols are also used to generate + * the appropriate export list for win32. */ + /* global state */ -PERLVAR(Gcurinterp, PerlInterpreter *) /* currently running interpreter */ -#ifdef USE_THREADS -PERLVAR(Gthr_key, perl_key) /* For per-thread struct perl_thread* */ -PERLVAR(Gsv_mutex, perl_mutex) /* Mutex for allocating SVs in sv.c */ -PERLVAR(Gmalloc_mutex, perl_mutex) /* Mutex for malloc */ -PERLVAR(Geval_mutex, perl_mutex) /* Mutex for doeval */ -PERLVAR(Geval_cond, perl_cond) /* Condition variable for doeval */ -PERLVAR(Geval_owner, struct perl_thread *) /* Owner thread for doeval */ -PERLVAR(Gnthreads, int) /* Number of threads currently */ -PERLVAR(Gthreads_mutex, perl_mutex) /* Mutex for nthreads and thread list */ -PERLVAR(Gnthreads_cond, perl_cond) /* Condition variable for nthreads */ -PERLVARI(Gthreadsv_names, char *, THREADSV_NAMES) -#ifdef FAKE_THREADS -PERLVAR(Gcurthr, struct perl_thread *) /* Currently executing (fake) thread */ -#endif -#endif /* USE_THREADS */ - -PERLVAR(Guid, int) /* current real user id */ -PERLVAR(Geuid, int) /* current effective user id */ -PERLVAR(Ggid, int) /* current real group id */ -PERLVAR(Gegid, int) /* current effective group id */ -PERLVAR(Gnomemok, bool) /* let malloc context handle nomem */ -PERLVAR(Gan, U32) /* malloc sequence number */ -PERLVAR(Gcop_seqmax, U32) /* statement sequence number */ -PERLVAR(Gop_seqmax, U16) /* op sequence number */ -PERLVAR(Gevalseq, U32) /* eval sequence number */ -PERLVAR(Gsub_generation, U32) /* inc to force methods to be looked up again */ -PERLVAR(Gorigenviron, char **) -PERLVAR(Gorigalen, U32) -PERLVAR(Gpidstatus, HV *) /* pid-to-status mappings for waitpid */ -PERLVAR(Gprofiledata, U32 *) -PERLVARI(Gmaxo, int, MAXO) /* Number of ops */ -PERLVAR(Gosname, char *) /* operating system */ -PERLVARI(Gsh_path, char *, SH_PATH) /* full path of shell */ -PERLVAR(Gsighandlerp, Sighandler_t) - -PERLVAR(Gxiv_arenaroot, XPV*) /* list of allocated xiv areas */ -PERLVAR(Gxiv_root, IV **) /* free xiv list--shared by interpreters */ -PERLVAR(Gxnv_root, double *) /* free xnv list--shared by interpreters */ -PERLVAR(Gxrv_root, XRV *) /* free xrv list--shared by interpreters */ -PERLVAR(Gxpv_root, XPV *) /* free xpv list--shared by interpreters */ -PERLVAR(Ghe_root, HE *) /* free he list--shared by interpreters */ -PERLVAR(Gnice_chunk, char *) /* a nice chunk of memory to reuse */ -PERLVAR(Gnice_chunk_size, U32) /* how nice the chunk of memory is */ - -PERLVARI(Grunops, runops_proc_t *, RUNOPS_DEFAULT) - -PERLVAR(Gtokenbuf[256], char) -PERLVAR(Gna, STRLEN) /* for use in SvPV when length is Not Applicable */ - -PERLVAR(Gsv_undef, SV) -PERLVAR(Gsv_no, SV) -PERLVAR(Gsv_yes, SV) -#ifdef CSH -PERLVARI(Gcshname, char *, CSH) -PERLVAR(Gcshlen, I32) -#endif - -PERLVAR(Glex_state, U32) /* next token is determined */ -PERLVAR(Glex_defer, U32) /* state after determined token */ -PERLVAR(Glex_expect, expectation) /* expect after determined token */ -PERLVAR(Glex_brackets, I32) /* bracket count */ -PERLVAR(Glex_formbrack, I32) /* bracket count at outer format level */ -PERLVAR(Glex_fakebrack, I32) /* outer bracket is mere delimiter */ -PERLVAR(Glex_casemods, I32) /* casemod count */ -PERLVAR(Glex_dojoin, I32) /* doing an array interpolation */ -PERLVAR(Glex_starts, I32) /* how many interps done on level */ -PERLVAR(Glex_stuff, SV *) /* runtime pattern from m// or s/// */ -PERLVAR(Glex_repl, SV *) /* runtime replacement from s/// */ -PERLVAR(Glex_op, OP *) /* extra info to pass back on op */ -PERLVAR(Glex_inpat, OP *) /* in pattern $) and $| are special */ -PERLVAR(Glex_inwhat, I32) /* what kind of quoting are we in */ -PERLVAR(Glex_brackstack, char *) /* what kind of brackets to pop */ -PERLVAR(Glex_casestack, char *) /* what kind of case mods in effect */ - -/* What we know when we're in LEX_KNOWNEXT state. */ -PERLVAR(Gnextval[5], YYSTYPE) /* value of next token, if any */ -PERLVAR(Gnexttype[5], I32) /* type of next token */ -PERLVAR(Gnexttoke, I32) - -PERLVARI(Grsfp, PerlIO * VOL, Nullfp) -PERLVAR(Glinestr, SV *) -PERLVAR(Gbufptr, char *) -PERLVAR(Goldbufptr, char *) -PERLVAR(Goldoldbufptr, char *) -PERLVAR(Gbufend, char *) -PERLVARI(Gexpect, expectation, XSTATE) /* how to interpret ambiguous tokens */ -PERLVAR(Grsfp_filters, AV *) - -PERLVAR(Gmulti_start, I32) /* 1st line of multi-line string */ -PERLVAR(Gmulti_end, I32) /* last line of multi-line string */ -PERLVAR(Gmulti_open, I32) /* delimiter of said string */ -PERLVAR(Gmulti_close, I32) /* delimiter of said string */ - -PERLVAR(Gscrgv, GV *) -PERLVAR(Gerror_count, I32) /* how many errors so far, max 10 */ -PERLVAR(Gsubline, I32) /* line this subroutine began on */ -PERLVAR(Gsubname, SV *) /* name of current subroutine */ - -PERLVAR(Gcompcv, CV *) /* currently compiling subroutine */ -PERLVAR(Gcomppad, AV *) /* storage for lexically scoped temporaries */ -PERLVAR(Gcomppad_name, AV *) /* variable names for "my" variables */ -PERLVAR(Gcomppad_name_fill, I32) /* last "introduced" variable offset */ -PERLVAR(Gcomppad_name_floor, I32) /* start of vars in innermost block */ -PERLVAR(Gmin_intro_pending, I32) /* start of vars to introduce */ -PERLVAR(Gmax_intro_pending, I32) /* end of vars to introduce */ -PERLVAR(Gpadix, I32) /* max used index in current "register" pad */ -PERLVAR(Gpadix_floor, I32) /* how low may inner block reset padix */ -PERLVAR(Gpad_reset_pending, I32) /* reset pad on next attempted alloc */ -PERLVAR(Gcompiling, COP) - -PERLVAR(Gthisexpr, I32) /* name id for nothing_in_common() */ -PERLVAR(Glast_uni, char *) /* position of last named-unary operator */ -PERLVAR(Glast_lop, char *) /* position of last list operator */ -PERLVAR(Glast_lop_op, OPCODE) /* last list operator */ -PERLVAR(Gin_my, bool) /* we're compiling a "my" declaration */ -PERLVAR(Gin_my_stash, HV *) /* declared class of this "my" declaration */ -#ifdef FCRYPT -PERLVAR(Gcryptseen, I32) /* has fast crypt() been initialized? */ -#endif - -PERLVAR(Ghints, U32) /* various compilation flags */ - -PERLVAR(Gdo_undump, bool) /* -u or dump seen? */ -PERLVAR(Gdebug, VOL U32) - - -#ifdef OVERLOAD - -PERLVAR(Gamagic_generation, long) - -#endif - -#ifdef USE_LOCALE_COLLATE -PERLVAR(Gcollation_ix, U32) /* Collation generation index */ -PERLVAR(Gcollation_name, char *) /* Name of current collation */ -PERLVARI(Gcollation_standard, bool, TRUE) /* Assume simple collation */ -PERLVAR(Gcollxfrm_base, Size_t) /* Basic overhead in *xfrm() */ -PERLVARI(Gcollxfrm_mult, Size_t, 2) /* Expansion factor in *xfrm() */ -#endif /* USE_LOCALE_COLLATE */ - -#ifdef USE_LOCALE_NUMERIC - -PERLVAR(Gnumeric_name, char *) /* Name of current numeric locale */ -PERLVARI(Gnumeric_standard, bool, TRUE) /* Assume simple numerics */ -PERLVARI(Gnumeric_local, bool, TRUE) /* Assume local numerics */ - -#endif /* !USE_LOCALE_NUMERIC */ +PERLVAR(Gcurinterp, PerlInterpreter *) + /* currently running interpreter + * (initial parent interpreter under + * useithreads) */ +#if defined(USE_ITHREADS) +PERLVAR(Gthr_key, perl_key) /* key to retrieve per-thread struct */ +#endif + +/* constants (these are not literals to facilitate pointer comparisons) + * (PERLVARISC really does create variables, despite its looks) */ +PERLVARISC(GYes, "1") +PERLVARISC(GNo, "") +PERLVARISC(Ghexdigit, "0123456789abcdef0123456789ABCDEF") +PERLVARISC(Gpatleave, "\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}") + +/* XXX does anyone even use this? */ +PERLVARI(Gdo_undump, bool, FALSE) /* -u or dump seen? */ + +#if defined(MYMALLOC) && defined(USE_ITHREADS) +PERLVAR(Gmalloc_mutex, perl_mutex) /* Mutex for malloc */ +#endif + +#if defined(USE_ITHREADS) +PERLVAR(Gop_mutex, perl_mutex) /* Mutex for op refcounting */ +#endif + +#ifdef USE_ITHREADS +PERLVAR(Gdollarzero_mutex, perl_mutex) /* Modifying $0 */ +#endif + +/* This is constant on most architectures, a global on OS/2 */ +PERLVARI(Gsh_path, const char *, SH_PATH)/* full path of shell */ + +#ifndef PERL_MICRO +/* If Perl has to ignore SIGPFE, this is its saved state. + * See perl.h macros PERL_FPU_INIT and PERL_FPU_{PRE,POST}_EXEC. */ +PERLVAR(Gsigfpe_saved, Sighandler_t) +#endif + +/* Restricted hashes placeholder value. + * The contents are never used, only the address. */ +PERLVAR(Gsv_placeholder, SV) + +#ifndef PERL_MICRO +PERLVARI(Gcsighandlerp, Sighandler_t, Perl_csighandler) /* Pointer to C-level sighandler */ +#endif + +#ifndef PERL_USE_SAFE_PUTENV +PERLVARI(Guse_safe_putenv, int, 1) +#endif + +#ifdef USE_PERLIO +PERLVARI(Gperlio_fd_refcnt, int*, 0) /* Pointer to array of fd refcounts. */ +PERLVARI(Gperlio_fd_refcnt_size, int, 0) /* Size of the array */ +PERLVARI(Gperlio_debug_fd, int, 0) /* the fd to write perlio debug into, 0 means not set yet */ +#endif + +#ifdef HAS_MMAP +PERLVARI(Gmmap_page_size, IV, 0) +#endif + +#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS) +PERLVARI(Gsig_handlers_initted, int, 0) +#endif +#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS +PERLVARA(Gsig_ignoring, SIG_SIZE, int) /* which signals we are ignoring */ +#endif +#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS +PERLVARA(Gsig_defaulting, SIG_SIZE, int) +#endif + +#ifndef PERL_IMPLICIT_CONTEXT +PERLVAR(Gsig_sv, SV*) +#endif + +/* XXX signals are process-wide anyway, so we + * ignore the implications of this for threading */ +#ifndef HAS_SIGACTION +PERLVARI(Gsig_trapped, int, 0) +#endif + +#ifdef DEBUGGING +PERLVAR(Gwatch_pvx, char*) +#endif +#ifdef PERL_GLOBAL_STRUCT +PERLVAR(Gppaddr, Perl_ppaddr_t*) /* or opcode.h */ +PERLVAR(Gcheck, Perl_check_t *) /* or opcode.h */ +PERLVARA(Gfold_locale, 256, unsigned char) /* or perl.h */ +#endif + +#ifdef PERL_NEED_APPCTX +PERLVAR(Gappctx, void*) /* the application context */ +#endif + +PERLVAR(Gop_sequence, HV*) /* dump.c */ +PERLVARI(Gop_seq, UV, 0) /* dump.c */ + +#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE) +PERLVAR(Gtimesbase, struct tms) +#endif + +/* allocate a unique index to every module that calls MY_CXT_INIT */ + +#ifdef PERL_IMPLICIT_CONTEXT +# ifdef USE_ITHREADS +PERLVAR(Gmy_ctx_mutex, perl_mutex) +# endif +PERLVARI(Gmy_cxt_index, int, 0) +#endif + +#if defined(USE_ITHREADS) +PERLVAR(Ghints_mutex, perl_mutex) /* Mutex for refcounted he refcounting */ +#endif